Ischiofemoral Impingement: another source of hip pain

Ischiofemoral Impingement (IFI) was first described in 1977 by Johnson1 in reference to patients with persistent pain in the medial thigh and groin following total hip arthroplasty. Patients had temporary relief following injection of anesthetic near the lesser trochanter, and long term relief following excision of the lesser trochanter. Ischiofemoral impingement has not been well...